static void renumberobjs(void) { pdf_xrefentry *oldxref; int newlen; int num; /* Apply renumber map to indirect references in all objects in xref */ renumberobj(xref->trailer); for (num = 0; num < xref->len; num++) { fz_obj *obj = xref->table[num].obj; if (fz_isindirect(obj)) { obj = fz_newindirect(renumbermap[fz_tonum(obj)], 0, xref); pdf_updateobject(xref, num, 0, obj); fz_dropobj(obj); } else { renumberobj(obj); } } /* Create new table for the reordered, compacted xref */ oldxref = xref->table; xref->table = fz_calloc(xref->len, sizeof(pdf_xrefentry)); xref->table[0] = oldxref[0]; /* Move used objects into the new compacted xref */ newlen = 0; for (num = 1; num < xref->len; num++) { if (uselist[num]) { if (newlen < renumbermap[num]) newlen = renumbermap[num]; xref->table[renumbermap[num]] = oldxref[num]; } else { if (oldxref[num].obj) fz_dropobj(oldxref[num].obj); } } fz_free(oldxref); /* Update the used objects count in compacted xref */ xref->len = newlen + 1; /* Update list of used objects to fit with compacted xref */ for (num = 1; num < xref->len; num++) uselist[num] = 1; }
static void renumberobj(fz_obj *obj) { int i; fz_context *ctx = xref->ctx; if (fz_is_dict(obj)) { int n = fz_dict_len(obj); for (i = 0; i < n; i++) { fz_obj *key = fz_dict_get_key(obj, i); fz_obj *val = fz_dict_get_val(obj, i); if (fz_is_indirect(val)) { val = fz_new_indirect(ctx, renumbermap[fz_to_num(val)], 0, xref); fz_dict_put(obj, key, val); fz_drop_obj(val); } else { renumberobj(val); } } } else if (fz_is_array(obj)) { int n = fz_array_len(obj); for (i = 0; i < n; i++) { fz_obj *val = fz_array_get(obj, i); if (fz_is_indirect(val)) { val = fz_new_indirect(ctx, renumbermap[fz_to_num(val)], 0, xref); fz_array_put(obj, i, val); fz_drop_obj(val); } else { renumberobj(val); } } } }
static void renumberobj(fz_obj *obj) { int i; if (fz_isdict(obj)) { for (i = 0; i < fz_dictlen(obj); i++) { fz_obj *key = fz_dictgetkey(obj, i); fz_obj *val = fz_dictgetval(obj, i); if (fz_isindirect(val)) { val = fz_newindirect(renumbermap[fz_tonum(val)], 0, xref); fz_dictput(obj, key, val); fz_dropobj(val); } else { renumberobj(val); } } } else if (fz_isarray(obj)) { for (i = 0; i < fz_arraylen(obj); i++) { fz_obj *val = fz_arrayget(obj, i); if (fz_isindirect(val)) { val = fz_newindirect(renumbermap[fz_tonum(val)], 0, xref); fz_arrayput(obj, i, val); fz_dropobj(val); } else { renumberobj(val); } } } }